How Long Does Gasoline Take to Deteriorate in the Fuel Tank?
2 Answers
Gasoline can deteriorate in one month. Here are the specific details about gasoline: 1. Composition: Gasoline is a hydrocarbon composed of hydrogen and carbon atoms. 2. Sulfur Content: The sulfur content in gasoline is 10mg/kg; excessive sulfur can clog the GPF. 3. Emissions and Anti-Knock Properties: To meet emission standards and improve anti-knock properties, lead was added. However, due to its toxicity when released into the air, lead has been gradually replaced. Sulfur and lead are harmful to vehicles and the environment but can enhance gasoline stability. 4. Flammability: Gasoline is highly volatile and flammable; even a small spark can ignite gasoline vapor in the air. The rate of evaporation mainly depends on external temperature—higher temperatures lead to faster evaporation.
In my experience, the time it takes for car fuel to go bad is quite crucial. Having driven an old car for many years, I've noticed that fuel typically starts to degrade within 3 to 6 months, though with proper storage, it can last about a year. Fuel deterioration is mainly caused by oxidation due to exposure to air or contamination with water, especially accelerated by high temperatures. The result is thickened fuel with more impurities, leading to difficulties in engine starting, increased fuel consumption, and even clogged injectors. Prevention is simple: keep the fuel tank well-sealed, and it's best to fill up before parking to minimize air space; for cars that are rarely used, add some fresh fuel or a fuel stabilizer every quarter—I've done this and saved a lot on repairs. Modern fuels with additives can last longer, but don't take it for granted. Regularly check the fuel's smell and color—if it smells sour or has sediment, don't use it. This way, your car runs smoothly, safely, and economically.
